/Engine/Plugins/Runtime/MeshModelingToolset/Source/ModelingComponents/Public/MeshOpPreviewHelpers.h
Optional configuration Configure the Standard and In-Progress materials
void ConfigureMaterials ( [UMaterialInterface](API\Runtime\Engine\Materials\UMaterialInterface) * StandardMaterial, [UMaterialInterface](API\Runtime\Engine\Materials\UMaterialInterface) * InProgressMaterial )